// fs/ext2.c
struct ext2_super_block {
    uint32_t inodes_count;
    uint32_t blocks_count;
    // ... 完整定义需包含所有EXT2字段
};

void ext2_init() {
    struct ext2_super_block *sb = read_disk(1024); // 读取超级块
    if(sb->magic != 0xEF53) panic("Invalid EXT2");
    create_root_directories(); // 创建预设目录结构
}
